Typewriting machine



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1 927 .1. A. B. SMITH TYPEWRITING MACHINE Jam Filed Fe 1925 2Sheets-Sheet 1 Jane 0 1927 J. A. B. SMITH TYPEWRITING MACHINE 2Sheets-Shem 2 Filed Feb. 20 1925 Tatented Jan. t,

hims rA-r. i.

tenant?- JESSE .d. SMITH, $TA11IF0ED, CONNECTICUT, ,ASSIGNOIR TOUNDERWGQT) TYPE- WRTTER COMPANY, NEWTYORK, N. 21, A GORPQRATION @hTYIPEWRITING MACHINE.

. Application filed-February $30, '1925. derial he. when.

This invention relates to improvements in stencil-card-writing devices"for typewriting machines, and more particularly to the kind disclosedin the patent to Elliot,

No. 1,378,771, dated May 17,- 1921.

In said patent, there is provided a stencil-card-holding framepivotallysupported at the rear of the carriage and extending over theplaten to the front thereof, where there is suspended therefrom astencil-card. The card is line-spaced by means including a finger-wheelon the card-carrying frame and a cam connected to said finger-wheel,said cam engaging a roller fixedly supported on the carriage-frame. Thecam has secured thereto a toothed Wheel having a pawl engaging therewithto hold the cam, and consequently the card supported by the cardholder,in various line-space positions. Thus, in operating said device, it ,isnecessary, in order to beginka new line, to return the carriage andvoperate the-linespacing mechanism, which, in said device, re-

quires two separate operations.

A feature of the present invention relates to improvements to expeditethe operation of the device disclosed in saidJElliott patent. To thisend the carriage is returned and the card line-spaced simultaneously.Tobring this about, the line-spacing cam, which raises the card-holder,is supported on the carriage frame, so as not to have a swinging orbodily movement, and consequently that it may readily be connected withthe mechanism ordinarily used to line-spacethe platen. The roller withwhich said'cam engages, in the present invention, is; supported on thecardholder, so'that, asthe cam is rotated by the actuation of the. usualline-space lever, the

card-holder is raised to tine-space the stencilenable the platen toremain unoperatcd when the usual line-space lever'is actuated, theplaten may be 'provided with the usual clutch shown in the patent to W.F. Helmond, No. 1,150,366, dated August 17,1915,

by which the platen may be reieased from its usual line-spacingmechanism Provision is also made in the present invention toenableadjustment'between theline-spacing mechanism andthe cam for raising thecard-holder. N

Another feature of the invention relates to means comprising a. lever bywhich the line-spacing mechan sm may he released so as to allow thecard-holder to resume its lowermost position for the beginning of ty ingof a new stenciLcard. This lever may e operated by the card-supportingframe when the latter is raised to its uppermost position.

Other features and advantages willhereinafter appean.

In the accompanying drawings,

Figure 1 is an end view of an "Underwood typewriter carriage withportions broken away for clearness, showing the invention appliedthereto. A

Figure 2 is a diagrammatic view similar to Figure 1 and shows thecardholder raised to its uppermost position to release the line spacingcam.

Figure 3 is a diagrammatic side view showing the line-spacing mechanismoperated.

Figure 4 is a top plan view of the device.

Figure 5 is a fragmentary front view showing the line-spacing mechanism.v

Figure 6 is a fragmentary side view showing theline-spacing cam and" apawl-andratchet for holding it in its operated posihit shaft 13 011 arocking frame 14 which is in t turn rockablv mounted on a cross-shaft 15fast on the platen-frame 16 of a typewriting machine. The clampingmember 112, as it is shown in the drawings, consistsof a. sheet-- metalbail having a finger-piece 17 at the center, and the jaws 11 beingformed at the ends and joined by a connecting piece 18,

The jaws hold the card in a locating recess formed in the end plates19of the rocking frame 1ft which are joined together'by a connecting bar20. The finger-piece 1'? co operates with another fin er-piece 21, the

latter being fastened ,to t ve frame 14: by

means of a cross-bar22 of which it forms L an integral part. The twofinger-pieces are drawn together to open the jaws against the pressureof springs 23, while at the same time the frame may be lifted to theposition shown in Figure 2 against a stop device 24.

there is provided a deflector plate 25 which is also designed to hug thecard against the platen to prevent shadowing of the types in a caseposition not being imprinted upon the card. One of the type-bars,designated by the numeral 26, is shown in front of the platen whichserves as a backing for the card when the types are struck to cut thestencil-card. Thus, by successively striking the types and byline-spacing the carriage after each impression, the first line oftyping is written upon the card.

In order to linepace the card there is provided mechanism whereby thefree end of the rocking frame 14 may be raised amounts corresponding tothe space between the lines. Said mechanism is operatively connected tothe line-space lever 27 of an Underwood standard machine, which isoperatcd sin'mltaneously With the return of the carriage. Said mechanismcomprises a pawl 28 and a ratchet 29, the former being pivotally mountedby means of a screw 30 on the slide 31 of the Underwood line-space.

The pawl is resiliently held mechanism. against the ratchet by means ofa spring 32 also fast upon the slide 31 by means of a screw 33. When thecarriage is returned the slide 31 is moved rearwardly and the ratchet 29is rotated one tooth by the pawl 28. Said ratchet 29 is mounted upon ashaft 34, which is revolubly mounted on brackets 35 fast to theplaten-frame by means of screws 36. In order to render theratchetand-pawl arrangement operative there is provided a retainingratchet 37-co-operating with a pawl 38, the latter being mounted on across-shaft 39 which is supported by the platen-frame 16 while theformer is connected to the ratchet 29 by means of a connecting hub 40 ofwhich it forms an integral part. As the ratchets are rotated, a cam 41is simultaneously driven around with the ratchets, and, due to itspeculiar periphery, the cam raises the frame by engaginga roller 42which is rotatably mounted on said frame. In this manner, the card israised, each time that the ratchet 29 is spaced one tooth, an amountequivalent to the width of one space between two lines of typing uponthe card.

When typing upon cards used in connection with addressing machines, itis sometimes necessary to use two, three or four lines and due to itslimited space it is desirable tos ace the lines according to the numberof lines to be typed thereon. To this end, the retaining ratchet 37 isprovided with three sets of teeth each having a plu- When it is desiredto change the position of the'ratchet relatively to the cam, the pin 43is pulled out of engagement with. one of the holes 44 by drawing theratchet against a spring 45 wound around the shaft 34 and the ratchet isrotated relatively to the cam. In this manner a diiferent set of teethmay be brought into position to co-operate with the feed and reta ningpawls.

After each line of typing, the carriage is restored and the pawl 28 ismoved to feed one tooth of the ratchet 2% As the ratchet is fed around,however, a spring 46 is wound, thus storing up power to rotatethe'ratchet backwardly when the retaining pawl 38 is released. Saidspring 46 is held at one end by a pin 47 on the shaft, and at the otherend is supported against one of the brackets 35. To eliminate thenecessity of manually releasing the pawl 38 to return the cam 41 to itsnormal position corresponding to the .first line of typing upon thecard, the pawl the action of the spring 46, the cam and the ratchets flyback to their normal position against a pin 51 fast on a center bracket52 and against which a flatportion 53 of the cam 41 strikes.

It is customary to provide a back for the stencil-cards, in ordertoprevent the type blows from injuring the platen and to facilitate thecutting of the stencil. A backing 54, generally made of celluloid orother hard material, is held on the platen 55 in a position to be struckby the types. Said backingencirclesa portion of the platen and is heldin place b means, not shown, but it may include a p ate in the mannerdisclosed in the application of Alfred G. F. Kurowski, Serial No,746,951, filed October 31. 1924. As it is desired to hold the celluloidbacking stationary, so that the same portion may be used and thenline-space the lever-r To this end the clutchbutton 56,

usually found in the Underwood. machines,

is pulled outwardly and thus the platenshai't 57 is disconnected fromthe line-space mechanism, rendering the platen stationary, The platenmay be spaced in the usual way lltl emme by ahandwheel 58 which is fastto the platen-shaft.

Variations may be resorted to within the scope of the invention, andportions of the improvements may be used Without others.

Having thus described my invention, l claim:

l. A device for typing stencil-cards, including, in combination, aplaten, a carriage therefor, a carriage-return lever, an elevatableframe overlying the platen, said frame being pivotally mountedupon t ecarriage at the rear of the platen and batting means for supporting astencil-card pendent there= fronnsaid card contacting with the platen atthe printing line, and means controlled by the carriage-return lever,for elevating; the free end of the frame step by step to successivelyline-space the card, said means including: a cam-plate rotatably mountedon a supporting" member fixed relatively to said carriage, and saidelevatable frame having means to engage the came to lift the frame stepby step as the cam rotates.

2. A device for typing; stencil-cards, including", in combination, aplaten, a carriage therefor, a. carriage-return lever, a framehaving:means for suspending a card presented to the platen at the printing"line thereof, said frame being hinged on. said carriage at the rearthereof, and means for elevating the free forward end of the frame toline-space the card upon operation of the carriage-return lever, saidelevating means including a cam pivotally mounted on a shaft, fixedrelatively to the carriage, a ratchet mounted on said bhaft, a'pawlreciprocated by. the carriage-return leverysaid pawl engaging with theratchet, retaining means for said ratchet, and means carried by saidfname for engaging the cam. in a manner to elevate the frame stcpby stepas the cam rotates I 3. lln combination with a typewriting machineincluding a carriage and a platen therefor, a line-space mechanismoperatively connected to a carriage-return lever, astenell-cuttingmechanism comprising a rockably mounted frame disposedtopresent a stencilcard to the printing field in front of the platen.means whereby the platen may be disconnected from the carriage-returnlever, and means controlled by the carriage-return lever to line-spacethe stencil-card, said lastinentioned means including a cam revolublymounted on a shaft fixed relatively to the platen, and a roller on saidframe operativelyconnected to the cam 4t In combination with atypewriting machine including a. :arriage and a platen therefor. 21linespacc mechanism operatively connected to a carriage-return lover, astencil-cutting" mechanism comprising a rockahly mounted frame disposedto present a stencil-card to the printing field in front of the platen,means whereby the platen may be disconnected from the carriage-returnlever, means controlled by the carriage-return lever to line-space thestencil-card, said lastncntioned means including a cam revolubly mountedon a shaft fixed relatively to the platen, and a. roller on said frameopera tively connected to the cam, and means to protect the platenagainst the type blows,"

said last-mentioned means including'a, celluloid backing encircling theplaten and fastening means to hold the backing around the platen,

5. In. combination with. a typewriting machine including a carriage anda platen therefor, a line-space mechanism. operatively connected to acarriage-return lever, a stencil-cutting mechanism comprising a rockablymounted frame disposed to present a stencil-card to the printing fieldin front of the platen, means whereby the platen may be disconnectedfrom the carriage-return lever, means controlled by the carriage-returnlever to line-space the stencil-card, saidlast-mentioned meansincluding: a pawl operatively connected to the carriage-return lever, aratchet co-operating with said pawl, a retaining ratchet and a pawltherefor, the two ratchets being joined together by a connectint, hub,and both beingoperatively connect ed to a cam to drive the same around,a roller mounted'on the frame and co-operating with the earn to raisethe frame to positions corresponding to different widths, and meanswhereby the relative positions of the cam and the ratchets may beline-snacinp width of the card.

6. In combination with a typewritingz ma chine including a; carriage anda platen stencil-card to the printingfield in front of the platein meanswhcrebythe platen may be disconnected from the carriage-return lever,means controlled by the carr age-return lever to line-space thestencil-card, said last-men tioned means including a pawl operativelyconnected to the carriage-return lever, a ratchet cooperating; withsaid'pawl. a retaining ratchet and a pawl therefor, the two ratchetsbeine: joined together by a connectino' hub, and both being operativelyconnected to a cam to drive thesame around a roller mounted on-the frameand oo-operating' with the cam to'raise the frame to positionscorresponding to widths, means wl'ierehy the relative position of thecam and the r atchets may be changed to positions corresponding to theline-spacing width .of the card, means tore-lease the retainingpawlsimultaneouslvwiththe insertion of a fresh card, said last-mentionedmeans including" a springwhich is Wound differentline-spacingline-spacing ice changed to postions corresponding to theres? lid

. sent a stencil-card to the printing field in front of'theplaten, saidstencil-cutting device comprising a rockably moiinted cardcarrying frameand clamps therefor to hold the edge of the card, a cam rotatably mount-7 ed on the carriage and fixed relatively to the platen, a roller on.the card-carrying frame operatively connected to the cam to raise thefree end of the frame as the cam isrotated, and means operativelyconnected to the carriage-return lever for rotating the cam si-"multaneously with the spacing of the carriage.

8. In combination with a typewriting machine including a carriage, aplaten therefor, and a carriage-return lever, a stencilcutting deviceborne by the carriage disposed to present a stencil-card to the printingfield in front of the platen, said stencil-cutting device comprisingarockably mounted cardcarrying frame and clamps therefor to hold theedge ofthe card, a cam rotatably mounted on the carriage and fixedrelatively to the platen, a roller on the card-carrying frame.operatively connected the cam to raise the free end of the frame as thecam is rotated,

and means operatively connected 'to-the carriage-return lever forrotating the cam simultaneonsly with the spacing of the carriage, saidmeans including a pewl-andratchet arrangement operated by the carriagereturn lever, and a retaining ratchet operatively connected to aretaining pawl. '9. In combination with a typewriting machine includinga carriage, a platen therefor, and a carriage-return lever, astencil-cutting device borne by the carriage disposed to resent astencil-card to the printing fiel' in front of the-platen, saidstencilcutting device comprising a rockably mounted cardcarrying frameand clamps therefor to hold the edge'of the card, a cam rotatablymounted on the carriage and fixed relatively to the platen, a roller onthe card-carrying frame operatively connected to the cam to raise thefree end of the frame as the cam is rotated, means operatively connectedto the carriagereturn lever for rotating the cam simultaneously "withthe spacing of the carriage, and means controlled by the swing of thecardcarrying frame to restore the com to its normal positioncorresponding to the first line of typing upon the stencil-card,simultaneously with the raising of the card-frame to insert a freshcard.

10. In combination with a typewritlng machine including a carriage, aplaten therefor, and a carriage-return lever, a stencilcutting deviceborne by the carriage disposed to present'a stencil-card to the plantingfield carrying frame and clamps therefor to-hold the edge of the card, acam rotatably mountin front of, the platen, said stencil-cutting devicecomprising a rookably mounted carded on the carriage and fixedrelatively to card, simultaneously with the raising of the card-frame toinserta fresh card, said lastmentioncd means including a springoperatively connected to the cam, said sprinr being loaded during theline feeding o the card at each carriage-return operatlon, a retainingratchet-and-pawl arrangement, and

a pin fast on the card-carrying frame coop:

crating with an extension on the pawl, whereby said pin will strike theextension on said pawl to release the ratchet, thus permitting thespring to act and to back-turn the cam to its normal position.

11. A device for typing stencil-cards, including, in combination, aplaten, a carriage therefor, a carriage-return lever, a frame havingmeans for supporting a stencil card pendent; therefrom, said frame beingpivotally mounted on the carriage in a manner to overlie the platen andto present the card to the platen contacting therewith at the printingline, and means for elevating the forward free end of the frame step bystep to line-space the card, said elevating means including a camrotatehly mounted on a shaft fixed relatively to the carriage, a rollercarried by said frame, said roller contacting with the cam to elevatethe frame step by step when the cam is rotated, and means controlled bythe reciprocating movementof the carriage-return lever for rotating thecam, said last-mentioned means including a ratchet fixed to the cam,apawl reciprocated by the carriage-return lever, said pawl beingdesigned to normally clear the ratchet but to engage ,the same nponoperation of the carriage-return lever, a retaining ratchet also fixedrelatively to the cam, a retaining pawl pivotally mounted on thecarriage, said retaining pawl being releasable Wll-EII the frame ismanually elevated to attach a fresh card thereto, and a spring forreturning the cam to its normal position upon clearing the retainingpawl. I

JESSE A. B. Si /11TH.

